How to Iterate Map in Java

There are several ways to iterate over Map in Java. In this article, we will discuss various ways of iterating map in Java and the best fit of various iteration while implementation.

Iterate Map using for-each loop and KeySet

Using for-each loop, we can iterate over map in Java. This is two step process: first you need to retrieve keySet for the map and then the keySet can be used to iterate using for-each loop. Let us understand how to iterate map using for-each loop and keyset in below code snippet.

Iterate Map using KeySet Iterator

Map in Java can be traversed using iterator of keyset. First you should get the object of keyset and then using the keyset, you can get the iterator for the same. Now this iterator object can be traversed using for loop. Let us analyse the traversal of map using keyset iterator.